Nh 1b over Piscataqua Estuary
Fair Condition71 years old3,041 vehicles/day
Location
| State | New Hampshire |
| County | Rockingham |
| Location | 1.1 Mi From Jct RT 1a |
| Carries | Nh 1b |
| Crosses | Piscataqua Estuary |
| Coordinates | 43.07089, -70.73820 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 483.9 ft (147.5 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 34.1 ft (10.4 m) |
| Deck Area | 1,534 sq m |
| Main Spans | 9 |
| Year Built | 1955 (reconstructed 2021) |
Traffic
| Avg Daily Traffic | 3,041 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 018100310014200 |